Affiliation: | 1. Coloproctology Unit, General and Digestive Surgery Department, Parc Taulí University Hospital, Universitat Autònoma de Barcelona, Sabadell, Spain;2. Digestive Department, Parc Taulí University Hospital, Universitat Autònoma de Barcelona, Sabadell, Spain;3. Pathology Department, Parc Taulí University Hospital, Universitat Autònoma de Barcelona, Sabadell, Spain |